Vending machine



FIG. 1 is a perspective view of a vending machine showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a side elevational view;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom view thereof. 

The ornamental design for a vending machine, as shown and described. 